Protector for lamp-globes



(NoModel.) v

, P. BRBDOW.

PROTECTOR FOR LAMP GLOBES.

` Patented Jan. 18,'1887.

A TTO/SWEK UNITED STATES PATENT OFFICE.

FRANK. BnEDoW, or DAVENPORT, IOWA.

PROTECTOR FOR'LAMP-GLOBES.

SPECIFICATION forming part of Letters Patent No. 356,270, dated January 18, 1887.

Application filed April 16, 1886. Serial No. 199,090. (No model.)

To all whom it may concern:

Be it known that l', FRANK BnEnoW, a citizen of the United States, residing at Davenport, in the county of Scott, State of Iowa, have invented certain new and useful Improvements in Protectors for Lamp-Globes, of which the following is a specification, reference being had therein to the accompanying drawings.

This inventionhas relation to covers or protectors for electric-arc and other lamp globes, `for the purpose of preventing rain, snow, dust, and insects and foreign substances from entering the saine and causing impairment of the light. These lamps are exposed in the open air to snow and rain, and as nonT constructed are open at the top, so that the snow and rain freely enters, causing the globe to crack, and the dust and insects entering causes the inside of the globe to become dirty and dull,whereby frequent cleaning ofthe same is required. By my construction I obviate these disadvantages by closing the top of said globe, thus preventing ingress of foreign substances and the egress of sparks.

Thef protector or cover as constructed is adapted to be applied to different sized globes, it (the protector) automatically adapting itself' thereto. Although I have herein illustrated my invention as applied to an ordinary electric-are lamp and frame, it is apparent that it maybe adapted to any lamp-globe where it can be used to advantage.

Heretofore globe-protectors have been constructed to support the globe or to be supported by a ceiling, from which the lamp is supported by a suitable hanger or bracket.

My improvement relates more particularly to the manner of supporting the protector, so that it is attached to and is movable with the hanger of the frame-Work that supports the globe A', carbons X Y, and the case Z, in which the carbon-controlling devices are arranged, tliese parts being of any Well-known construction and forming no part of my invention.

With these objects in view my invention consists in certain features of construction, hereinafter specified, and particularly pointed out in the claims.

Referring to the drawings, in which likeletters of reference indicate like parts, Figure 1 is a side elevation of an ordinary electric-arc lamp provided with my invention. Fig. 2 is a central vertical section of my cover detached; and Fig. 3 isa similar View, the section being taken ata rightangle to the one shown in Fig. 2. Fig. 4 is a crosssection taken on the line x of Fig. 2, the cylinder being shown open.

A represents the biacket or frame-Work which supports `the lamp A', its carbon-controlling mechanisimaud a case, Z, therefor, said bracket being suspended in the usual manner.

B represents a light (and in this instance a sheet met-al) cylinder, formed of two parts or leaves, B B2, the dividing lines beingsubstantially diainetrically opposite each other and forming two semi-cylindrical sections. The sections or leaves B B2 are hinged, as at B3, and oneis provided with a knob, B", for facilitating the opening and closing oi'one oi'said sections. f

The cylinder B is held to the frame Aand above the globe A by means of clamps B5, each consisting cfa bar fixed to and projecting from the cylinder far enough to rest against one side of the frame A, and a movable bar, Bt', pivoted to the fixed bar, so as to be turned against the opposite side of the frame A, the bolt b serving to bind the two bars firmly upon the frame. rIhis construction permits a removable and adjustable attachment of the protector, whereby it is adapted to varied sizes and styles of frames.

C represents the lamp or globe protector, which is formed with the collar C and flared bell-shaped covering C2. The collar C is adapted to fit and slide Within the cylinder B, and the flared bell-shaped portion C2 is adapted to fit down closely upon the globe A of the lamp. f

Mounted in apertured brackets D upon the inside of the cylinder, and extending down to about the top of the collar C', is a rod, D, which is bent, as at D2, and projected through the shield-plate C, extending upwardly from the collar C', and through a vertical slot, B, formed in the cylinder.. Theshield-plate C3 may, if desired, be simply an extension of the collar G, or it may be an independent plate, the object being merely to close the vertical slot in the cylinder. Upon the rod D is mounted a spiral spring, D, the upper end of which is secured to the rod andthe lower end to the bracket D', whereby the tendency of the spring is to force the cover or protector C2, by means of the rod, down closely over the lampglobe. The rod D, after passing through the shield-plate C3 and aperture or slot BG of the cylinder, is ben't to form a handle, D4, for the purpose of raising the protector, by means of said rod, out ot` contact with the lamp-globe, for the purpose of cleaning the same. The spring D may be extended to bear upon the under surface of the upper bracket, D', while its lower end is secured to the rod; but as this arrangement of coiled springs aboutrods is old in many devices, no claim is made, broadly, thereto.

It is apparent that the hinged section B' of the cylinder serves the purpose of a door, thus giving access to the interior for adjusting the movable carbon or supplying new carbons, and this without the necessity ot' removing the entire device.

To remove the device as a whole from the lamp-bracket, it is only necessary to turn the clamps B5X so as to disconnect the cylinder from the frame. Raising the rod D by the handle D* causes the protector to rise out of contact with the globe A. This latter operation also permits the removal and interchange of globes for cleaning or other purposes.

It will be seen that the device as a whole is adapted to be applied to all sizes of lamps, as by reas'on ot' the self-adjusting features the protector will be adapted to globes of ditterent diameters, although the protector should conform more or less closely to the curvature of the globe.

The cover or protector is held with a yielding pressure upon the globe, whereby contraction and expansion of the globe maytake place and still a comparatively tight contact of the two be maintained. I have shown one springpressure rod; but it is apparent that, if desired, two or more may be employed.

The protector C2 is formed on a true curvethat is, of such form as to iit snugly a spherical globe of the same radius-and yet it will touch globes of different radii at substantially all the points necessary to make a dust-tight joint, and this even if the globe has a vertical ange at the top, as is, quite usual, whereas if the protector had a depending iange, as is usual, greater liability oi' a misfit with globes 55 would exist.

Having thus fully described my invention and its operation, what I claim, and desire to secure by Letters Patent, is-

1. The combination ofan electriclight'globe- 6o supporting frame-work, a case for the carboncontrolling mechanism, a globe supported by the frame-work, a cylinder removably secured to the frame-work below the carbon-controlling-mechanism case and over the globeand a concave ilangeless globe-protector secured to a sleeve movable in the cylinder to bring the protector upon the globe, substantially as specified.

2. A cover for electric and other lamps, consisting of a cylinder formed in two sections hinged together and provided with attachingclamps, in combination with a lamp-frame and with a spring-actuated rod mounted in said cylinder, and a globecovering portion in the end of said cylinder, substantially as specified.

3. 'Iheframe A, cylinder B` consisting of the two sections B B, the rod D, and spring D", in combination with the bell-shaped cover C, substantially as speciiied.

4. The combination, with the frame of a lamp, of the cylinder' B, consisting ofthe two sections B B2, hinged, as at B3, and having the cover C mounted therein, of clamps arranged at the sides of said cylinder for securing the same lto the sides of a lamp-bracket, substantially as specified.

,5. The frame A, cylinder B, slotted, as at B5, and having the springactuated rod D, bent as at DZD mounted therein, in combination with the cover C, having the bell-shaped portion C2 and collar C', and the shield-plate C3, substantially as specified.

In testimony whereof I atiix my signature in presence of two witnesses.

FRANK BREDOV.

Witnesses:

CHARLES E. PUTNAM, R. W ooDMANsnE. 

